Cultivator.



'110.847,431. PATENTED MAR. 19, 1907.

vv. H. NBSBITT.

CULTIVATOR. APPLIUATION rum) MAB. ze, 190s.

2 SHEETS-SHEET 1.

wITNnssEs U INVENTOR ATT'Y Muslims-L PATENTED MAR.*19, 1907. W H NBSBITT GULTIVATOR.

APPLICATION FILED MAB. 28, 1906.

2 SHEETSr-SHEET I2.

1 HHH IHIIHH FK i I I I IIHHHHII y mvENTon l .y wl-LNESBr-r'r. BY ATT'Y IINIVIFD STATES narnn'r ernten.

CULTIVATOR.

Specification of Letters Patent.

Patented March 19, 1907'.

Application filed March 23,1906. Serial No. 308,574.

To LZ whom t may con/cern:

Be it known that I, WILLIAM HENRY NEs- Bir'r, of Roland, in the county of Lisgar, Province of Manitoba, Dominion of Canada, farmer, have invented certain new and useful Improvements in Oultivators, of which the following is a specification.

My invention relates to improvements in cultivators of the class herein shown and described, which is principally used on rough unbroken ground; and the objects of my invention are to provide a frame of exceedingly light but strong construction and provide me ans for adj ustably securing the share-blades to the frame, further objects being to enable the cultivator to be easily raised and lowered and render the construction thereof as cheap and simple as possible; and it consists, essentially, of a substantially horizontal share-supporting frame comprising parallel front and rear members and transverse connecting members and means for connecting the sharesuppor'ting standards to the same, and crank-shafts to which the wheels are secured iournaled in bearings on the transverse members, and means for turning said crank-shafts and holding them in any position to which they have been turned, the various parts of the device being constructed and arranged in detail as hereinafter more particularly described.

Figure 1 is a side view of my cultivator. Fig. 2 is plan view of the same. Fig. 3 is an enlarged detail side view of the fastening emloyed to connect the share-supporting standard to the frame. Fig. 4 is a view of the opposite side to Fig. 3. Fig. 5 is'a perspective detail of the fastening partially in section. Fig. 6 is a perspective detail oiV the share-blade, showing the method of securing the same in position. Fig. 7 is a detail plan view of the connecting-brackets secured to the rear of the frame.

In the drawings like let-ters of reference indicate corresponding parts in each figure.

A is a cultiVator-frame which is substantially parallel to the ground and comprises parallel iront and rear members a a and a plurality of transverse connecting members a2 a3 a4 a5. The transverse connecting members are bent in the form of an elongated Z, as shown, whereby the share supporting standards secured to the front and rear portions of the transverse members may be removed from each other a suitable distance both laterally and from front to rear.

Crank shafts or axles B are journaled in the bearings b b, which are secured to the transverse members of the frame, and the supporting-wheels b2 of the cultivator are secured at the ends thereof, the crank-shafts being so designed that when turned the frame will be raised or lowered relative to the axial line of the wheels. To the end of the crankaxle turning-levers b3 are secured, provided with locking-dogs b4, adapted to engage the notches b5 of a toothed segment b, secured to the frame. As usual, hand-levers 117 are provided to operate the locking-dogs. It will thus be seen that as the levers are rotated the crank-shafts B will also be rotated, which will raise or lower the frame relative to the driving-wheels, as desired.

O are the supporting-standards for the share-blades, which are adjustably secured to the transverse members by means of fastenings c. These fastenings, as will be seen on reference to Figs. 3, 4, and 5, comprise main members c, adapted to abut the transverse bars and provided with lugs c2, extending under the transverse bar and abutting the share-supporting standard, and D-shaped members c3, extending around the transverse bar and standard through holes provided in the main member and having screwthreaded ends on which nuts c4 are secured. It will be seen that these fastenings are perfectly adjustable and will rigidly hold the share-supporting standards in any position. Wedges c5 may be provided to further tighten the fastening.

The share c6 is secured by suitable means, such as riveting, to the slightly-upturned end c7 of the standard. This supports the share in a substantially horizontal position and extending wholly to one side of the supporting-shank. Two rows of shares are provided, and the spacing is so arranged that the cuts taken by each share will overlap. The shares on opposite sides of the center of the cultivator are arranged on opposite sides of the respective standards.

In the form I have shown in the drawing I have four blades on the first line and three on the second. By arranging them on opposite sides of the standards, as described, I am enabled to always have an even draft on both sides of the shaft.

As usual in cultivators, a seat D is provided, secured to the shaft E by means of an arm d. The shaft E is preferably pivoted to brackets e, secured to the rear part of the frame, and a IIO frame, the draft of Which will be even on both sides of the shaft and which vmay be raised or lowered to cut any desired depth. It Will be observed, as shown in Fig. 2, that the share-blades of my cultivator take a very broad cut and are designed to overlap an inch or so.

It might be pointed out that my cultivator is entirely distinguished from the various forms of gang-plows used, as it is generally used to prepare the plowed ground for the seeding by Working the soil and cutting the Weeds. It Will also be seen that by having the blades overlapping the cultivator cuts the full Width of the frame may be taken.

vWhat I claim as my invention isl. In a cultivator the combination with the substantially horizontal share supporting frame comprising parallel front and rear members, a plurality of transverse connecting members to Which the share-supporting standards are adjustably secured, of two crank-shafts extending beyond the sides Qi the frame, bearings for the shafts, connected to the transverse members ofthe frame-supporting Wheels rotatably secured to the end of the crank-shafts, operating-levers on the crank-shafts, means for holding the same adjustably in position, a shaft, brackets secured to the rear ofthe frame to Which the shaft is pivoted, a bracket secured to the iront part ofthe frame and extending around the shaft as and for the purpose specified.

2. In a cultivator the combination with a substantially horizontal .share supporting frame comprising parallel front and rear members, a plurality of transverse connecting lmembers to Which the share-supporting standards are adjustably secured, a shaft, brackets secured to the rear of the frame to which the shaft is pivoted and an inclosing bracket secured to the iront member of the frame for holding said shaft in position, as

.and for the purpose specied.

Signed at Roland, in the Province of Manitoba, this 6th day of March, 1906.

W. H. NESBITT. IVitnessos:

R. W. BIRCH, D. W. JONES. 

